# Earth's orbit is an ellipse with the Sun at one of the foci. Perihelion is the point

## Question:

a. The distance from perihelion to the Sun.

b. The distance from aphelion to the Sun.

c. The distance from aphelion to the center.

d. The distance from the center to the Sun.

e. In this ellipse it can be shown that the distance from the Sun to point P equals the distance from aphelion to the center. Using this information, find the distance from the center to P.

f. Write an equation that models the orbit of Earth around the Sun.

These four circular snow sculptures by British environmental sculptor Andy Goldsworthy (b 1956) were made from bricks of packed snow at the Arctic Circle.

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**Related Book For**

## Discovering Advanced Algebra An Investigative Approach

**ISBN:** 978-1559539845

1st edition

**Authors:** Jerald Murdock, Ellen Kamischke, Eric Kamischke